Added a public game modifier system 😮 For more variety (#2801)

## Description:

Added a public game modifier system. It causes that

5% of public games are played on the compact version of the map
10% of public games have "Random Spawn" activated

Percentages can easily get changed via `DefaultConfig`.
We can also easily add more modifiers.
Modifiers can stack, so in rare cases you will play on a compact map
with random spawn 😄
More variety!

### "Compact Map" modifier implementation

- With the "Compact Map" modifier the lobby max player count gets
reduced to 25% and only 25% of the regular bots and only 25% of the
regular nations will spawn (because the map has only 25% of its regular
size)
- In private lobbies and singleplayer the nation reduction happens too
(When "Compact Map" is enabled).

### Restrictions

- Duos/Trios/Quads team modes do not get Random Spawn (defeats the
purpose)
- Maps with smallest player count < 50 do not get Compact Map in team
games (not enough players after the reduction to 25%). I have calculated
all the possible max player counts.

### How it looks like

Random Spawn modifier:

<img width="528" height="183" alt="Screenshot 2026-01-06 194959"
src="https://github.com/user-attachments/assets/2f729da9-80c3-4548-8205-71129da2a76a"
/>

Very rare case: Two modifiers at the same time and only 10 max players
have been chosen from `[GameMapType.FaroeIslands]: [20, 15, 10]`.
Because of the 75% reduction in player count only 3 players are allowed
(3 is the minimum). I think its funny that you can play a 1v1v1 in rare
occasions 😄

<img width="526" height="184" alt="Screenshot 2026-01-06 194938"
src="https://github.com/user-attachments/assets/834326eb-df03-41b7-b1db-1efa3f1013b5"
/>

### Funny side-effect

Team games with random spawn. That will be interesting. No more "Who is
better in donating troops to the frontline". Instead you have to heavily
coordinate with your teammates.

## Please complete the following:

- [X] I have added screenshots for all UI updates
- [X] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [X] I have added relevant tests to the test directory
- [X] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

FloPinguin

src/server/MapPlaylist.ts

@@ -93,25 +93,43 @@ export class MapPlaylist {
     const playerTeams =
       mode === GameMode.Team ? this.getTeamCount() : undefined;
 
+    let { isCompact, isRandomSpawn } = config.getRandomPublicGameModifiers();
+
+    // Duos, Trios, and Quads should not get random spawn (as it defeats the purpose)
+    if (
+      playerTeams === Duos ||
+      playerTeams === Trios ||
+      playerTeams === Quads
+    ) {
+      isRandomSpawn = false;
+    }
+
+    // Maps with smallest player count < 50 don't support compact map in team games
+    // The smallest player count is the 3rd number in numPlayersConfig
+    if (mode === GameMode.Team && !config.supportsCompactMapForTeams(map)) {
+      isCompact = false;
+    }
+
     // Create the default public game config (from your GameManager)
     return {
       donateGold: mode === GameMode.Team,
       donateTroops: mode === GameMode.Team,
       gameMap: map,
-      maxPlayers: config.lobbyMaxPlayers(map, mode, playerTeams),
+      maxPlayers: config.lobbyMaxPlayers(map, mode, playerTeams, isCompact),
       gameType: GameType.Public,
-      gameMapSize: GameMapSize.Normal,
+      gameMapSize: isCompact ? GameMapSize.Compact : GameMapSize.Normal,
+      publicGameModifiers: { isCompact, isRandomSpawn },
       difficulty:
         playerTeams === HumansVsNations ? Difficulty.Hard : Difficulty.Easy,
       infiniteGold: false,
       infiniteTroops: false,
       maxTimerValue: undefined,
       instantBuild: false,
-      randomSpawn: false,
+      randomSpawn: isRandomSpawn,
       disableNations: mode === GameMode.Team && playerTeams !== HumansVsNations,
       gameMode: mode,
       playerTeams,
-      bots: 400,
+      bots: isCompact ? 100 : 400,
       spawnImmunityDuration: 5 * 10,
       disabledUnits: [],
     } satisfies GameConfig;